Elevator signaling apparatus.



No. 748,409. 'PATENTED DEC. 29, 1903.

' J. MoLEAN.

ELEVATOR SIGNALING APPARATUS.

APPLICATION FILED m0. 8, 1902. N0 MODEL. 2 SHEETS-SHEET 1.

HVWf/wssasw Y8 [lweniarfil m U AAWZZ PATBNTED DEC. 29, 1903.

J. MoLEAN. I v ELEVATOR SIGNALING APPARATUS.

APPLICATION FILED DEC. 8, 1902.

2 SHEETS-SHEET 2.

W da

NO MODEL.

Patented December 29, 1903.

PATENT OFFICE.

JOHN MOLEAN, OF NEW YORK, N. Y.

ELEVATOR SIGNALING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 748,409, d t d D b 29,1903. Application filed December 8,1902. Serial No. 134,331. (No model.)

To all whom it may concern:

Be it known that I, JOHN MOLEAN, a citizen of the United States,residing in the borough of Manhattan, city of New York, county of NewYork, and State of New York, have invented certain new and usefulImprovements in Elevator Signaling Apparatus, of which thefollowingisaspecitication,referencebeing had therein to the accompanyingdrawings.

' not requiring reducing-gearing, and a change in the direction ofmovement of the car, continued for a sufficiently long period, whetheroccurring at the top or bottom of the shaft or at some intermediatepoint, will make the indicators receptive only of signals correspondingto the new direction of movement of the car.

According to myinvention means are provided whereby an elevatorattendant may immediately send a return-signal to the floor from which acall-signal was sent to indicate to an intending passenger which carwill first arrive at the floor traveling in the direction in which thepassenger intends to travel.

According to my invention electrically-controlled indicators areprovided for the car and at the floor, these indicators being connectedin series when a call-signal is sent and the car-indicator beingresponsive and the floorindicator unresponsive under such conditions andthe operation of the return-signal means by the elevator attendantcloses a branch circuit excluding the car-indicatorand including thefloor-indicator, and the floorindicator is then responsive.

According to my invention I provide for restoring theindicators tonon-indicating condition by the movement of the gate to admit apassenger, as in my application for Letters Patent, filed November 16,1901, Serial No. 82,511; but my present invention provides for effectingthis operation through an electric switch directly controlled by thegate, and according to my invention the switch has a normal bent tocircuit-closing position and is held in circuit-opening position by theelevator-gate.

My invention includes various improvements in the construction andarrangement of the circuits and apparatus, hereinafter fully set forth.

I will now particularly describe the construction of elevator signalingapparatus embodying my invention illustrated in the accompanyingdrawings and will thereafter point out my invention in claims.

Figure 1 is a diagrammatic vertical section of a portion of anelevator-shaft and elevatorcars therein, showing the signaling circuitsand apparatus. Fig. 2 is a detail rear elevation of the floordirectional signaling device or calling instrument. Fig. 3 is a verticalsection of the up-signaling portion of the same. Fig. i is a detailelevation of a portion of the directional switch at the upper part ofthe elevator-shaft. Fig. 5 is a horizontal section of the same. Fig. 6is a detail section of the frictional clutch and arm controlling suchdirectional switch. Fig. 7 is a longitudinal vertical section. Fig. 8 isa rear end view, and Fig. 9 is an elevation of the switch of therestoring means.

I have shown in the diagrammatic view, Fig. 1, the circuits andapparatus for two intermediate floors in a shaft containing twoelevator-cars A and B. Signaling devices are provided at each of thedoors and are constructed so as to send directional signals to theelevatorcars. 'lhese signaling devices are diagrammatically shown inFig. 1, and a single signaling device is completely and accuratelyillustrated in Figs. 2 and 3. As shown, each of these signaling devicesis provided with two switches, one for the up-signal and the other forthe down-signal. The signaling device for the upper floor has a switch70 for the tip-signal and a switch Z for the down-signal, and thesignaling device for the lower floor has a switch It for the upsignaland a switch Z for the down-signal. Each of these switches is actuatedby a corresponding push-button to close its circuit, the push-button mfor the switch 70, the pushbutton at for the switch Z, the push-button mfor the switch It, and the push-button n for the switch Z. Theretracting-spring m for the push-button m is shown in proper position inFig. 3 and diagrammatically in Fig. l, and the retracting-springs n m nfor the other push-buttons are illustrated only diagrammatically. Aretaining device carrying an armature is provided for each switch and afixed electromagnet is provided for the armature of each retainingdevice, the retaining device 0 and electromagnet 0 for the switch 70,the retaining device 9 and the electromagnet r for the switch Z, theretaining device 0 and the electromagnet o for the switch and theretaining device 9" and the electromagnet r for the switch Z. Eachretaining device or latch is constructed to en gage with its push-buttonwhen the button is pushed rearwardly to close the switch and to holdtheswitch closed until the energization of the correspondingelectromagnet causes the armature thereof, carried by the retainingdevice, to be attracted, thereby releasing the switch. Aretracting-spring is shown for each retaining device, operating toretract the armature and latch.

Signal-indicators are provided located at the respective floors andshown as comprising, for the elevator-car A, electric lamps g at theupper floor and g at the lower floor for up-signals and h at the upperfloor and h at the lower floor for down-signals, and for theelevator-car E g at the upper fioor and g at the lower floor forup-signals and h2 at the upper floor and h at the lower floor fordown-signals. These indicators are, as usual,

located at the outside of the shaft, preferably above the correspondingentrance-gates. Their function is to indicate to the intending passengerwho sends a signal which-one of the elevator-cars will first arrive athis floor moving in the direction in which he wishes to travel; but thisresult is accomplished not by automatic action, but by a return-signalfrom the elevator attendant.

The indicators for the elevator attendant are shown as electric lampscarried by the respective elevator-cars. In the elevator-car A theindicator a is for the upper floor and the indicator a for the lowerfloor, and in the elevator-car B the indicator 6 is for the upper floorand the indicator 1) for the lower floor. Each of these indicators givesboth the tip-signal and the down-signal, but is under directionalcontrol of the elevator mechanism, so that the indications will belimited to those corresponding to the direction of movement of the car,and when the car is going up the signal will necessarily be antip-signal and when the car is going down the signal will necessarily bea down-signal. Each of the elevator-cars is provided with signalingdevices, one for each floor, whereby the elevator attendant may send asignal to the floor from which a call or signal was sent by theintending passenger, these signaling devices being under the control ofthe elevator attendant, so that he may immediately return the signal atwhatever distance he may be from such floor if his car will be the firstto arrive at the floor. This signaling device is shown as comprising aswitch or circuit-closer and is shown only diagrammatically, the car Ahaving the circuit-closer c for the upper floor and the circuit-closer ofor the lower floor and the car B having the circuit-closer (Z for theupper floor and the circuit-closer d for the lower floor.

The means for limiting the signal indications in any car to thosecorresponding to the direction of movement of the car are located in theGlQVELEOP'ShBfl) and are controlled by the elevator mechanism andcomprise a switch device for each elevator-car, such switch devicecontrolling by a single movement all of the indicators in thecorresponding car for the different floors. As shown, this switch devicecomprises a pivoted bar 8 for the elevator A and a pivoted bar 25 forthe elevator B. The switch-bar s and the contacts controlled thereby forthe two floors shown are partly shown in Figs. 4: and 5, and both switchdevices are of identical construction. Each switch-bar is composed of orfaced with insulating material and has two inclined faces. When theswitch-bar s is to the right, as shown, the spring-contact fingers u andu are held away from and out of contact with their respectivecontact-plates n and a and the spring-contact fingers o and o arepermitted to press against and make contact with their correspondingplates '0 and n The switch-bar s also has conductive arms 5 and 5 whichexercise a directional control upon the circuits of the restoring means,closing only the restoring-circuits corresponding to the direction ofmovement of the car. The switch-bar s is actuated through aconnecting-rod 3 having a slotted connection with an actuating-arm 8',this actuating-arm 3 being loosely mounted on the elevator-sheave Swithout reducing gearing and having a frictional connection therewith,shown as provided by a frictional clutch comprising clampingplates .9and s, between which the actuating-arm s" is located, suchclamping-plates being pressed against the actuating-arm s by the helicalspring .5. (See Fig. 6.) The switch-bartis also shown in right positionand in such position opens the contacts 10 10 and w m and permits thecontacts m :0 and 013' m to close, and the switch-barialso hasconductive arms '6 and t constituting the directional switch for therestoring-circuits, and is actuated by an arm t, having a slottedconnection with a connecting-rod t the actuating-armt having africtional clutch connection such as above described with the sheave Tof its elevator-actuating mechanism. The frictional connection causesthe exertion in one direction or the other, depending upon the directionof movement of the corresponding elevator-car, of a predetermined forcesufficient to shift the switch and firmly hold it in shifted position.

The loose IIO are therefore open.

or slotted connection between the connect-l ing-rod and actuating-armpermits a limited freedom in the initial movementin either direction, sothat a small retrograde movement of a car will not shift the switch. Itis to be noted, however, that should an elevator-car ascend for only aportion of its full travel and then descend its switch will be shifted,it being unnecessary for the car to reach the extremity of its movementin either direction to shift the switch.

The means for restoring the signal-indicators to non-indicatingcondition comprise electric-circuit-controlling means actuated by thegates for admission to the elevatorcars, such circuit-controlling meansbeing shown as spring-actuated circuitclosers, adapted to be set intothe frames or jambs of the elevator-gates, so as to be actuated bydirect contact with the elevator-gates. The four circuit-closersrequired for the two floors and two cars shown are diagrammaticallyillustrated in Fig. 1 and are of identical construction, and theupper-floor left-gate circuit-closer is fully and accurately illustratedin Figs. 7, 8, and 9. The movable part of this circuit-closer comprisesa pin 6, fitted to slide in a housing-plate f and pressed forward by aspring and carrying at its rear end a sleeve e, of insulating material,with contact-rings p and g, which make contact with spring-fingers y yand z ,2, respectively, when the pin 2' is in forward position, as shownin Figs. 7 and 9. The pin dis in forward position only when theelevator-gate is open. With the gate closed the direct contact with theend of the pin t' causes the pin to be moved rearwardly into suchposition that the springcontacts y y and z 2 press upon the insulatedsleeve 6, and their circuits The circuits of these spring-contacts arethe restoring-circnits for restoring the indicators to non-indicatingcondition, the springs y y for the down-signals and the springs .2 z forthe up signals. When the elevator-gate is opened to admit a passenger,these restoring-circuits are closed. When the elevator-gate is closedafter the passenger has been admitted, these restoringcircuits areopened and are not again closed until the gate is again opened to admita passenger. The other restoring device of the upper floor has aspring-pin t, which is directly actuated by contact with theelevatorgate E against the resilient action of the spring j and is shownin forward position, the elevator-gate E being open. The contactspringsy y and .2" ,2" are in contact with the conductive rings 13 and g,respectively, and the restoring-circuit corresponding to the directionof movement of the elevator-car is closed.

The elevator-gates D and F for the lower floor are combined withrestoring means such as above described, the spring-pin t for the gate Dand the spring-pin 2' for the gate F,

I will now describe the circuits with which the apparatus abovedescribed are combined and the operations thereof. A main positiveconductor AL and a main negative conductor 2 are connected to somesuitable source of electricity, generating a current adapted forilluminating the indicating-lamps. Assume that a passenger at the upperfloor has operated the up-signal push-button m to signal to a car thathe wishes to travel upward. The circuits closed by such operation are asfollows: from the positive conductor a, through the wire 3, extendingfrom the lower part thereof, and by wire 9 of the usual flexible cableto the elevator-car and through wire 5, upper-floor inside or car lampb, wire 6, flexible wire 7, wire 8, upper-floor outside or floorup-signal lamp g wire 10, contact-plate m and spring :23 of directionalswitch, wires 11 and 12, and tip-signal switch 7a to the negativeconductor 2. It will be noted that the carlamp 1) and the floor-lamp gare now connected in series in the same circuit. The amount of currentrequired by the floor-lamp is such that it will not under theseconditions be illuminated, but the car-lamp will be illuminated and willthus give an indication apprising the elevator conductor that anintending passenger at the upper floor desires to go up. If the car Bwill be the first car to arrive at such floor going up, the elevatorconductor will operate the upper-floor circuit-closer d, and willthereby close a shunt or short circuit between the conductors 5 and 6,in multiple with the car-lamp I), this short circuit being of slightresistance, so that the greater part of the current will passtherethrough and the car-lamp b will be shu nted,and the diminishedresistance of the circuit will cause an in creased current to flowtherethrough, and under these conditions the floor-lamp will beilluminated and the intending passenger will be apprised thereby of thefact that the car B will be the first car to arrive at his floor goingup. Upon the arrival of the car at the fioor the gate E will be openedto admit the passenger to the car,and thereby the restoring circuit fortip-signals will be closed through the forward movement of thespring-pin t". This restorii'ig-circuit is as follows: from the mainpositive conductor 4, through the motor-generator M shown at the upperport-ion thereof, whereby a current of low potential will be caused toflow through the conductor 14, the conductive arm '6 of the directionalswitch, through wires 15 and 16 to the upper spring ,2" of the restoringdevice, and from the upper spring 2, through the conductive ring q, tothe lower spring 27, and by wire 17 and electromagnet back to thenegative conductor 2. This circuit will energize the electromagnet o andcause the retaining device o to be released, permitting the switch isand push-button m to be retracted to forward position, and therebyopening the signalingcircuit, which was closed by the switch It, andrestoring the indicators to non-indicating condition.

ICO

The signaling-circuit and restoring-circuit above described were thosefor the right elevator B in Fig. l. The left elevator A is also shown asmoving upward, and a corresponding signaling-circuit would be closed forthe upper-floor indicating-lamp a in this elevator-car, as well as forthe upper floor up-signal outside lamp g. Should, however, theelevator-car A or either elevator-car be descending, it would notreceive the up-signal, and, conversely, should either elevator-car beascending itwould not receive a down-signal. This can be illustrated byassuming that an intending passenger on the lower floor has pushed thedown-button n to indicate that he desires to go down. This will closethe down-switch Z, as shown, and the switch will be held closed by theretaining device 1'' until one of the doors of the lower floor has beenopened to admit the passenger to an elevator-cargoingdown. Although thedownswitch Z is closed, it cannot send a signal to either of theupwardly-moving elevator-cars, because all down-signaling circuits areopen at the directional switches, as will be evident from a descriptionof the down-signaling circuit to the elevatorcar A. This partly-closedcircuit is as follows: from the positive conductor 4 by wire 18,flexible wire 19, wire 20, car-lamp a, wire 21, flexible wire 22, wire23, down-signal floor-lamp h, wire 24 to the contact-plate M At thispoint the circuit is opened by reason of the position of the switch-bars, which results from the upward movement of the elevatorcar A, and thecircuit will remain open until the elevator-car A changes its directionof movement, and thereby shifts the switch-bar 3. When the switch-bar sis thus shifted, the spring it will be permitted to make contact withthe plate u and the current will flow from the spring to by wires 25 and26 and down-switch Z to the negative conductor 2. Although the opencondition of this circuit will be maintained by the switch-bar s so longas the elevator-car is moving upward, nevertheless the down-signalswitch Z will be retained in closed condition,and as soon as theelevator-car changes its direction of movement and shifts the switch-bar3, whether at the top of the shaft or at some intermediate point, thisdown-signaling circuit will be closed. As before described, the presenceof both the car-lamp ct and the floor-lamp h in series in the samecircuit will cause the carlamp a only to be illuminated; but when theelevator conductor operates the contact device c be will shunt thecircuit of the carlamp or between the wires 20 and 21 and will cause thefloor-lamp 71' to be illuminated, as above described relative to thelamps g and b.

When an elevator-gate is opened to admit a passenger to an elevator-cargoing in one direction, the restoring-circuit of the correspondingdirection is alone closed, and signals for the other direction from thesame floor are unaffected by reason of the control of the directionalswitch 3 s or t t of the restoring-circuit. For example, should the leftelevator-gate D of the lower floor be opened to admit a passenger to theleft elevator-car A while the elevator-car A is ascending thedown-signal of that floor will be unaffected, since the downrestoring-circuits controlled by the elevator-car A are open at theswitch 8. It will be noted that the restoring-circuits are individual toeach car and are therefore unaffected by the conditions of therestoring-circuits of other cars.

For simplicity of illustration the drawings show only the circuits andapparatus for two intermediate floors of a shaft containing twoelevators. The repetitions for other elevators and other floors areobvious.

It is obvious that various modiiications may be made in the constructionshown and above particularly described within the spirit and scope of myinvention.

What I claim, and desire to secure by Let ters Patent, is

1. An elevator signaling apparatus comprising a signal-indicator for anelevator-car, a directional signaling device located at a floor of thebuilding and connected to such indicator, a directional shifting devicecontrolling such connection, an actuating-arm connected to the shiftingdevice by a loose connection so as to permit the initial movement of theactuating-arm in either direction to be independent of the shiftingdevice, a rotating part moving with the elevator-car, and a frictionalconnection between such rotating part and the actuating-arm.

2; An elevator signaling apparatus comprising a signal-indicator for anelevator-car, a directional signaling device located at a floor of thebuilding and connected to such indicator, a directional shifting devicecontrolling such connection, an actuating-arm connected to the shiftingdevice by a loose connection so as to permit the initial movement of theactuating-arm in either direction to be independent of the shiftingdevice, and a sheave of the elevator-actuating mechanism on which sucharm is rotatively mounted and with which such arm has a frictionalconnection.

3. An elevator signaling apparatus comprising a plurality ofsignal-indicators for an elevator-car, directional signaling deviceslocated at floors of the building and connected to the correspondingindicators, a directional shifting device controlling all of suchconnections, a rotating part moving with the elevator-car, and an armrotatively mounted on such rotating part and havinga frictionalconnection therewith, such arm being connected to the directionalshifting device and actuating the same by its frictionally-controllcdmovement.

4. An elevator signaling apparatus comprising a plurality ofsignal-indicators for an elevator-car, directional signaling deviceslocated at floors of the building and connected to the correspondingindicators, a directional shifting device controlling all of suchconnections, a rotating part moving with the elevator-car, anactuating-arm connected to the shifting device by a loose connection soas to permit the initial movement ofthe actuating-arnrin eitherdirection to be independent of the shifting device, and a frictionalconnection between the rotating part and actuating-arm.

5. An elevator signaling apparatus comprising a plurality ofsignal-indicators for an elevator-car, directional signaling deviceslocated at floors of the building and connected to the correspondingindicators, a directional shifting device controlling all of suchconnections, a sheave of the elevator-actuating mechanism, an actuatingarm rotatively mounted on such sheave and having a frictional connectiontherewith, and a slotted link connecting the actuating-arm anddirectional shifting device.

6 An elevator signaling apparatus com prising an electrically-controlledsignal-indicator for an elevator-car, a plurality of circuit-controllingdirectional signaling devices located at floors of the building andconnected to such indicator, a directional switch interposed in suchconnections and comprising a plurality of pairs of contacts forup-signals and a plurality of pairs of contacts for downsignals, eachpair of contacts having a normal bent to closed position, suchdirectional switch also comprising a circuit-opening device adapted inone position to open the upcontacts only and in another position to openthe down-contacts only, a sheave of the elevatoractuating mechanism andactuating means for such directional switch comprising an arm rotativelyfitted on such sheave and having a frictional connection therewith.

7. An elevator signaling apparatus comprising an electrically-controlledsignal-indicator for an elevator-car, a circuit-controlling directionalsignaling device located at a door of the building and connected to suchindicator, a directional switch interposed in such connection, anactuating-arm connected to such directional switch by a loose connectionso as to permit the initial movement of the actuating-arm in eitherdirection. to be independent of the directional switclnand asheave ofthe elevator-actuating mechanism on which such arm is rotatively mountedand with which it has a frictional connection.

8. An elevator signaling apparatus comprising a plurality ofelectrically-controlled indicators in an elevator-car,circuit-controlling directional signaling devices located at floors ofthe building and connected to the corresponding indicators, adirectional switch interposed in all of such connections, a rotatingpart moving with the elevator-car, and a frictional connection betweensuch rotating part and the directional switch and actuating the switchby its frictionally-controlled movement.

9. An elevator signaling apparatus comprising a plurality of indicatorsin an elevator-car, one indicator for each floor, a directionalsignaling device for each floor connected to the correspondingindicator, and a directional shifting device controlled by the directionof movement of the elevator-car and controlling such connections tolimit the nal indications to those corresponding to the direction ofmovement of the car.

10. An elevator signaling apparatus comprising a plurality ofelectrically-controlled indicators in an elevator-car, one indicator foreach floor, a circuit-controlling directional signaling device for eachfloor connected to the corresponding indicator, and a directional switchinterposed in all of such connections and controlled by the direction ofmovement of the elevator-car.

11. An elevator signaling apparatus comprising a directional signalingdevice located at a floor of the building, a directionally-controlledsignal-indicator for the elevator-car connected to such signalingdevice, another signaling device in the elevator car and anothersignal-indicator at such floor unresponsive to the signaling device atsuch door and connected to the signaling device in the elevator-car.

12. An elevator signaling apparatus comprising a circuit-controllingsignaling device located at a floor of the building, anelectrically-controlled signal-indicator for the elevator-car, anotherelectrically-controlled signalindicator at such floor, conductorsconnecting the signaling device and car-indicator and floor-indicator inseries, the floor-indicator being unresponsive when in series with thecar-indicator, and a circuit-controlling signaling device in theelevator-car arranged to close a branch of such circuit excluding thecar-indicator, such branch circuit including the floor-indicator and thefloor-indicator being responsive when such branch circuit is closed.

13. An elevator signaling apparatus comprising a circuit-controllingsignaling device located at a floor of the building, anelectrically-controlled signal-indicator for the elevator-car, anotherelectrically-controlled signalindicator located at such floor,conductors connecting the signaling device and car-inditor andfloor-indicator in series, and a circuitcloser in the elevator-cararranged to shunt the circuit of the car-indicator, thefioor-indicatorbeing unresponsive when in series with the car-indicator and responsivewhen the carindicator is shunted.

14:. An elevator signaling apparatus com prising a signal-indicator foran elevator-car, a signaling device located at a floor of the buildingand connected to such indicator, a gate at such floor for admission tothe car, and electrical restoring means controlling such indicator andincluding a switch directly and automatically actuated by the movementof the gate and automatically controlled in its restoring operation bythe opening movement of the gate.

15. An elevator signaling apparatus comprising anelectrically-controlled signal-indicater for an elevator-car, acircuit-controlling signaling device located ata floor of the buildingand connected to such indicator, a gate at such floor for admission tothe car, a restoring-circuit for theindicator, and a switch controllingsuch restoring-circuit having a normal bent to circuit-closing positionand located so as to be held in circuit-opening position by theelevator-gate when the elevatorgate is closed.

16. An elevator signaling apparatus comprising a signal-indicator for anelevator-car, a directional signaling device located at a floor of thebuilding and connected to such indicator, a gate at such floor foradmission to the car, directional restoring-circuits for the indicator,a switch controlling such restoring-circuits and having a normal bent tocircuit-closing position and located so as to be held in circuit-openingposition by the elevator-gate when the elevator-gate is closed, and adirectional shifting device controlled by the direction of movement ofthe car and controlling the connections of the signaling device andindicator and controlling the restoring-circuits.

17. An elevator signaling apparatus comprising a plurality ofelectrically-controlled signal-indicators for an elevator-car,circuitcontrolling directional signaling devices located at floors ofthe building and connected to corresponding indicators, a directionalshifting device controlled by the direction of movement of the car andcontrolling all of such connections, gates at such floors for admissionto the car, and circuit-controlling directional restoring means for eachfloor, actuated by the movement of the gate of such floor and connectedto the corresponding indicator, the directional shifting device alsocontrolling the connections of all the restoring means.

18. An elevator signaling apparatus comprising a plurality ofelectrically-controlled signal-indicators for an elevator-car,circuitcontrolling directional signaling devices located at floors ofthe building and connected to corresponding indicators, gates at suchfloors for admission to the car, circuit-controlling directionalrestoring means for the several floors actuated by the movement of thegates of corresponding floors and connected to the correspondingindicators, and directional shifting means controlled by the directionof movement of the car and controlling the connections of all of thesignaling devices and indicators and also controlling the connections ofall of the restoring means.

19. An elevator signaling apparatus comprising a plurality ofelectrically-controlled signal-indicators for an elevator-car,circuitcontrolling directional signaling devices located at floors ofthe building and connected to corresponding indicators, a directionalshifting device controlling all of such connections, a rotating part ofthe elevator-actuating mechanism, an actuating-arm connected to theshifting device and mounted upon and having a frictional connection withsuch rotating part, gates at the floors for admission to the car, andcircuit-controlling directional restoring means for the several floorsactuated by the movements of the gates of corresponding floors andconnected to the corresponding indicators,the directional shiftingdevice also controlling the connections of all of the restoring means.

20. An elevator signaling apparatus comprising a plurality ofelectrically-controlled signal-indicators for an elevator-car,circuitcontrolling directional signaling devices located at floors ofthe building and connected to corresponding indicators, a directionalswitch device interposed in all of such connections, an actuating armconnected to such directional switch device, a sheave of theelevator-actuating mechanism on which such arm is rotatively mounted andwith which it has a frictional connection, gates at the floors foradmission to the cars, directional restoring-circuits for theindicators, and a directional restoring-switch at each floor controllingsuch restoring-circuits and having a normal bent to circuit-closingposition and located so as to be held in circuitopening position by thecorresponding elevator-gate when such elevator-gate is closed, thedirectional shifting-switch also controlling all of suchrestoring-circuits.

In testimony whereof I have ai'fixed my signature in presence of twowitnesses.

' JOHN MCLEAN.

Witnesses:

HENRY D. WILLIAMS, HERBERT H. GIBBS.

